Water heating device



w. L. MORRISON EIAL 2,285,998

WATER HEATING DEVICE Filed April 7, 1939 4 Sheets-Sheet i June 1942- w. L. MORRISON ETAL 2,235,998

WATER HEATING DEVICE Filed April 7, 1939 4 Sheets-Sheet 2 June 9, 1942.

w. L. MORRISON ETAL 2,285,998

WATER HEATING DEVICE Filed April 7, 1959 4 Sheets-Sheet I5 J1me 1942- w. L. MORRISON ETAL 2,235,998

WATER HEATING DEVICE Filed April 7, 1939 4 Sheets-Sheet 4 Patented June 9, 1942 WATER HEATING nEvrcE Lake Forest, and Robert Park Ridge, Ill.

Application April 7, 1939, Serial No. 266,480

Willard L. Morrison,

Edwin Moore 6 Claims.

This invention relates to water heating devices and has for its object to provide a new and improveddevice of this description.

The invention has as a further object to provide a water heating device made up of a series of parts all of which can be stamped from metal and connected together.

The invention has as a further object to provide a water heating device wherein the passageway through which the heating water passes, is

.formed integral with the metal.

The invention has as a further object to pro vide a water heating device made up of a plurality of stamped sheets of metal fastened together, with a plurality formed into the metal. K

The invention has as a further object to provide a water heating device with a relatively large area of primary heating surface.

The invention has as a further object to provide a water heating device which can be cheapLv manufactured and which shall be efllcient in operation.

The invention has other objects which will be more particularly pointed out in the specification.

Referring now to the drawings,

Fig. 1 is a diagrammatic form of water heating device embodying the invention;

Fig. 2 is an enlarged sectional view taken on 7 line 2-4 of Fig.

Fig. 3 is a sectional view of Fig. 2:

Fig. 4 is a sectional view taken on line 4-4 of ig.

Fig. 5 is a perspective view of the device illustrated inFigs. 1 to 4, with parts broken away;

Fig. 6 is a view showing the several sheets of material after being stamped and before being fastened together, but in position to be fastened together;

Fig. 7- is an enlarged sectional view showing a small portion of the device illustrated in Fig. 6 when the sheets are connected together;

8 is a side elevational view of a modified construction, taken on line 8-8 of Figs. 9 and 10, with one semi-cylinder of the reservoir removed and a portionof one of the cold water supply sheets broken away to expose one of the boiler water passageway sheets Fig. 9 is tion of Fig. 8, with portions of the. reservoir broken away and taken on the line 8-9 of Fig.

8, showing the several stampings and threaded of separate passageways taken on line 33 view showing one a bottom elevation of the central porportion or body of water through another set of bushings in place and welded together at the flanges to form the complete tank and heater;

Fig. 10 is a vertical sectional view taken on line lillll of Fig. 8;

Fig. 11 is a sectional view with parts broken supply passageway therefrom of the various stampings and threaded bushings, separated and in their proper assembly relationship to be welded together at their marginal edges to form a liquid tight combined water heater and reservoir;

Fig. 15 is a sectional view, with the reservoir broken away, taken on line lS-li of Fig. 8, showing particularly the passageways and circuit for the boiler water circulation and their inlt and outlet connections formed by the opposed stampings. I

Fig. 16 is a "sectional view, with the reservoir I broken away,. taken on line lG-IB of Fig. 8, showing particularly the passageways and circuit for the cold water supply and their inlet and outlet connections formed by the opposed stampmgs;

Fig. 17 is a view of the upper lefthand portion of Fig. 8, showing the admission of the boiler water at the end instead of the top.

Like numerals refer to like parts throughout the several figures.

As illustrated in the drawings, we provide a.

hot water heating element which is composed of two or more sheets of with depressions or grooves indented in the faces thereof and which form passageways when the sheets are fastened together, through which the water or other liquid is transmitted. Furthermore, these passageways produced by these indentations or grooves in the sheets of material diflerent portion or body of water can be passed back and forth through one setof passageways and another passed back and forth water passageway and the cold water supply passageway heat conducting material.

passageways, the Des 'the parts are l which ll formed between sageways being arranged so as to allow a free interchange of heat between the two portions or bodies of liquid. These sheets'are preferably provided with laterally extending flanges and there is also provided a reservoir which may be made in one or two pieces having laterally extending flanges, and the device is quickly and easily assembled by fastening these flanges together, either by welding, spotwelding, riveting, or in any other suitable manner, the sheets and parts when fastened together forming a reservoir in which one liquid is heated by another and stored so that it can be drawn off and used at any point of use desired. The drawings illustrate one form of making such a device where all stamped out of sheet metal.

Referring now to the drawings, there is illustrat'ed in Fig. 1 one form of the invention. with the associated parts in connection with which it is used. In this construction there is a boiler is used to heat water for any purpose, such as for a heating system. In this construction water from the boiler i does not go to the point of use, but is circulated and recirculated through the boiler and i used to heat water to be sent to the point of use. This water to be thus heated is in a reservoir 2. In Figs. 1 to 7 this reservoir is made up of four metal sheets, stamped or otherwise shaped to the desired shape. It can be made of any desired number of sheets and as shown in the rest of the figures, there are illustrated six sheets. It is of course evident that any other number of sheets may be used.

In this construction of a sheet 3 bent into shape to form a' reservoir and having a laterally projecting flange 4. There is a sheet 5, which is formed with a series of grooves or passageways formed by forming into the metal a series of hollow ribs 8 united at their ends. This sheet is also provided with a flange I. There is also a sheet 8, formed with aseries of grooves or passageways formed by forming into the metal a series of hollow ribs 9 united at their ends, and which is also provided with a flange Ill. The ribs 6 and 9 are so formed that they extend back and forth across the sheets, space in them is a continuous space from the end of the rib at one edge of the sheet to the other end at the other edge of the sheet. The ribs 9 are smaller than the ribs 6 and when the parts are assembled, fit into them as illustrated in Fig. 3, thus forming a passageway ll be-. tween the two sets of ribs, which extends back and forth across the reservoir. There is a sheet II which forms the bottom of this particular reservoir and when the parts are assembled, this sheet closes the bottom of the hollow spaces in the ribs 9 so as to form another passageway i3 extending back and forth across the reservoir. The flanges 4, 1 and Ill andthe edge of the sheet ii are all fastened together to form a water tightjoint, as by brazing, welding, riveting, or

in any other deslredmanner, as shown in Figs. 1, 4 and 5.

;Ihe water from the boiler I passes through the pipe ll into the passageway l3 between the ribs 9 and the sheet l2, see Fig. 5, and 'then passes along this passageway and passes out through the pipe l5 and returns to the boiler. The water to be heated passes from any suitable source of supply through a pipe I8 into the passageway the ribs 8 and 6 and it then passes along this passageway and is heated by Figs. 1 to '1, there is being continuous so that the hollow into the space in the boiler water passing through the passageway l3 and passes out through the opening 11 the reservoir above the ribs 6, so as to fill this reservoir with hot water. The hot water is conducted from the reservoir by a pipe is to the place where it is used. The reservoir is preferably covered with heat insulating material is.

In the construction shown in Figs. 8 to 17 we have shown a series of sheets formed with pas--v sageways struck into the metal, so that the wa ter from the boiler and the water to be heated pass back and forth across the reservoir sev eral times while in heat exchange relationship, thus providing a more emcient heating of the water and a device which will heat larger quan titles of water. It is of course understoodthat any number of thesedifierent sheets maybe used, depending upon the conditions presented,

the amount of water to be heated and thetemperature to which the water is to be heated, the

number of sheets which we have shown in these Ed has ribs 28 which extend in one direction and ribs 29 which extend in the opposite direction, as clearly shown in Fig. 10. The sheet 25 has ribs 30 which extend in one direction and ribs 3! which extend in the opposite direction. The

ribs 28 of the sheet 24 and ribs 383 of the sheet 25 are opposed to each other so as to form a continuous passageway 32 extending back and forth across the reservoir.

The sheet 2% is provided with ribs 38 which extend in one direction and ribs 5 3 which exprovided with ,extending back and forth tend in the opposite direction. The sheet 2'! is ribs 35 which extend in one direction and ribs 36 which extend in the opposite direction. The ribs 35 of the sheet 26 are opposite the ribs 3i of the sheet 25, thereby forming a continuous passageway back and forth across the reservoir. The ribs as of sheet 2i are opposite the ribs 33 of sheet 26, thereby forming a continuous passageway 38 across the reservoir. The passageway 31 is connected at the ends by the passageways 49, Figs. ll,.12, 13, 14.

In assembling the device, the flanges of the several parts are placed together and are fastened in position either by welding, riveting, or in any other desired manner. I vantages of this construction is that all the sheets can be welded at the same time, as their edges are all overlapping. It will be seen that these sheets can be easily and quickly assembled and fastened together to form a water tight reservoir. These various parts of course may be manufactured in any desired manner, but would ordinarily be manufactured by stamping or pressing, and they may be made out of any metal desired, such as iron, steel, stainless steel, or copper, and the reservoir may thesame kind of metal or metal if desired, but whatever the metal, the

same machine may be used to form the sheets.

These sheets at which extends One of the 'adbemade up of g of different kinds of pipes are bent back and forth into 7 a,2ss,ecs' w 3 formthe inlet ,and outlet openings 38, Ill and II, able. For example, a primary surface ofover ten by bending the metal at these points, the metal. of feet may be secured with a comparatively small the sheets on one side being bent in one direction tank, say a tank of fourteen inches across by and on the other side being bent in the other fifty-six inches long, the length being reckoned pipes 42,43 or welded in position in these openings. These pipes may be internally threaded before or after being welded in position, so that may be easily attached thereto. The several sheets may be connected together in any other manner than that shown and the inlets and outlets may also be formed in any other manner desired.

In tanks now in use, pipes are placed therein through which the boiler water passes, and these the passageways are larger at the ends, as shown at 31a and 31b. F g.8, than in the straightaway ways for the other water.

When the parts are assembled, the water from the boiler passes in through -the'opening 4| and pipe see Figs. 8 and 15, and'then passes back and forth along the passageway 31 and through the enlarged ends 310' of the passageway and then out through the pipe 43. The water to be heated passes in the inlet 45, see Fig. 10 and into the along the outside of the passes up to the top of section 2! where it passes central passageways and the reservoir, being heated during this passage.

Some of the water at the same time passes through the opening 48, see Figs. 8 and 14, to the other side of the central passageways, into the part 20 and passes up to the top thereof in the same way. This water then passes through the openings 41 into the passageways 32 and 38 and then passes back and forth through these passageways, where it is in the boiler water passing through the passageway 31, so as to become heated thereby, and then passes out through the outlet ill and pipe 42 to the point of use. Passageway 32 is connected directly to outlet I and passageway 38 is connected by the opening 48 with the outlet 40,

The reservoir is preferably located at a point higher than the boiler and the boiler is connected to the inner or central heater element, that is the part containing the passageways, at the, top and the bottom, so that water will flow therethro'ugh continuously by thermosyphonic action.

Water heating devices as now commercially used are made of iron and become clogged wlth'sediment and in many cases reservoirs of the type herein set out, in the event they are made of iron and rust, can be thrown away and a new one installed atless cost than the cost required to take apart and clean one of the water heating reservoirs as now manufactured.

It will further be noted that our device permits the use of inner plates of copper and outer plates of iron as shown. for example, in all. of the figures and that the sheet stampings can be made thick if desired, all of which increases the life of the device.

Furthermore, in this device there is a large amount of primary heat exchange surface ayail- 75 see Figs. 14 and 16.

heat exchange relation to and fills the two semi-cylindrical members. There is a discharge pipe connected to heat exchange passageway We claim: a

1. A waterheating device comprising a reservoir having outer walls. sheets of heat conductand forth across the sheets, the ribbed sheets together-t with 'the .ribsof one sheet opposite the ribs or the separated passageways extending back and forth opposite the ribs of the other sheet, forming separated passageways extending back and forth across the sheets, inlets for connecting one-of said passageways with water to be heated another passageway with hot water, the water to be heated receiving heat from the hot water.

the middle heat interchanger V other sheet, forming and both of the inlets of said passageways bein at' ing back and forth across the sheetsfa' 'central-- the ends thereof, and outlets for both the hot passageway and a passageway on eachside of the water and the water to be heated, both of said central passageway, an admission opening for I outlets being at the ends or said passageways admitting-hot water at one end of the central and in iroximity to each other, 5 passageway and admission op nings in the ends 3. A water heating device comprising a reserof the other two passageways for admitting wavoir made out of a plurality of sheets or heat ter to be heated from said receiving receptacles conducting material, each or a plurality of said into said two passageways, and discharge means sheets having two separated passageways exfor discharging water from the other ends of the tending back and forth across the sheets, said three passageways. passageways qonsisting of substantially parallel 6. A water heating device comprisingta resergrooves extending back and forth across said voir comprising outer and inner sheets of heat sheets, and means for connecting the ends of the conducting material, the outer sheets having engrooves of each of said passageways together to larged water receiving receptacles therein, said form the two separated passageways. 5 outer sheets having four inner sheets'between 4. A water heating device comprising a reserthem, each of said inner sheets having a series voir comprising outer and inner sheets of heat of oppositely projecting hollow ribs, the oppoconducting material, the outer sheets having: sitely projecting ribs of adjacent sheets being in water receiving receptacles therein, each of the engagement so that the hollows of the assoinner sheets having a series of oppo itely prociated ribs constitute three passageways extendfleeting ll r .1 pp i ly p je i g ribs ing back and forth across the sheets, a central of adjacent sheets being in engagement so that passageway, and a passageway on ea h i 1 the hollows of the ribs are brought together to the central passageway, an admission opening form a plurality of passageways extending back for admitting hot water being provided at one and forth across the sheets, said pa ew y end of the central passageway and admission located between the water receiving receptacles openings being provided in'the ends of the other formed by theouter sheets, means for admitting two passageways for admitting water to be heatthe cold water to be heated into said receiving ed from said receiving receptacles into said two receptacles, and means for admitting hot water passageways, anddischarge means for dischargis one of i passageways and Water 2 be ing water from the other ends of the three pasheated in another of i pa y sageways, the reservoir being provided with 5. A water heating devic c mpri i a resermeans for admitting the water to be heated into voir comprising outer and innner sheets of heat the water receiving receptacles of the outer;

conducti m ia the outer he h vi sheets, at the portion thereof opposite the adlarged water receiving receptacles therein, said mission openings in ttmpassageways, so outer sheets having four inner sheets between t t, t pass aldng the mn sh et t th th m. h of Said inner Sheets having Series I said admission openings before enteringthe pasof oppositely projecting hollow ribs, the opposageways fqrm d by said inner sheets;

sitely projecting ribs of adjacent sheets being in WILLARD MORRISON engagement so that the hollows of the asso- 40 ROBERT EDWIN MOORE.

elated ribs constitute three passagew ys extend- 

